⚡ Cu ρ (75°C): 0.0214 Ω·mm²/m 🔌 NEC / IEC Standards: NFPA 70 & IEC 60364 🇺🇸 US Grid Avg: $0.175/kWh 🇩🇪 DE Grid Avg: €0.345/kWh 🇸🇪 SE Elpris: 1.54 SEK/kWh 🇳🇴 NO Strøm: 1.17 NOK/kWh 🔩 Copper Ref: $9,650/t (2026-10-24)
⚡ IEC 60364-5-52 · DIN VDE · NEK 400 · SS 436 40 00

Kabeltværsnit for 40 Ampere ved 300 Meter (230V)

Beregning af kabeltværsnit (mm²), spændingsfald og sikringsstørrelse efter dansk standard DS/HD 60364 for 40 A over 300 m ved 230V.

Copper Cable (≤3% Drop)95 mm²Drop: 5.41V (2.35%)
Aluminum Cable (≤3% Drop)150 mm²Drop: 5.65V (2.46%)
Voltage at Load224.6 VLine Loss: 216.3 W
Max Power & Breaker9.2 kW40A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 40A at 300m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A342.4 V (148.87%)0.0 V564.8 V (245.57%)13696.0 WDrop High
2.5 mm²24 A18 A205.44 V (89.32%)24.6 V338.88 V (147.34%)8217.6 WDrop High
4 mm²32 A25 A128.4 V (55.83%)101.6 V211.8 V (92.09%)5136.0 WDrop High
6 mm²41 A32 A85.6 V (37.22%)144.4 V141.2 V (61.39%)3424.0 WDrop High
10 mm²57 A44 A51.36 V (22.33%)178.6 V84.72 V (36.83%)2054.4 WDrop High
16 mm²76 A59 A32.1 V (13.96%)197.9 V52.95 V (23.02%)1284.0 WDrop High
25 mm²101 A78 A20.54 V (8.93%)209.5 V33.89 V (14.73%)821.8 WDrop High
35 mm²125 A97 A14.67 V (6.38%)215.3 V24.21 V (10.52%)587.0 WDrop High
50 mm²151 A118 A10.27 V (4.47%)219.7 V16.94 V (7.37%)410.9 W~ ≤5%
70 mm²192 A150 A7.34 V (3.19%)222.7 V12.1 V (5.26%)293.5 W~ ≤5%
95 mm²232 A181 A5.41 V (2.35%)224.6 V8.92 V (3.88%)216.3 W✓ OK (≤3%)
120 mm²269 A210 A4.28 V (1.86%)225.7 V7.06 V (3.07%)171.2 W✓ OK (≤3%)
150 mm²309 A241 A3.42 V (1.49%)226.6 V5.65 V (2.46%)137.0 W✓ OK (≤3%)
185 mm²353 A275 A2.78 V (1.21%)227.2 V4.58 V (1.99%)111.0 W✓ OK (≤3%)
240 mm²415 A324 A2.14 V (0.93%)227.9 V3.53 V (1.53%)85.6 W✓ OK (≤3%)
300 mm²477 A372 A1.71 V (0.74%)228.3 V2.82 V (1.23%)68.5 W✓ OK (≤3%)
400 mm²570 A445 A1.28 V (0.56%)228.7 V2.12 V (0.92%)51.4 W✓ OK (≤3%)

FAQ — Kabeltværsnit for 40 Ampere ved 300 Meter (230V)

Hvilket kabeltværsnit kræves til 40A ved 300 meter (230V)?

Til 40 Ampere over 300 meter ved 230V anbefales 95 mm² kobberkabel (spændingsfald 5.41V / 2.35%).

Hvor mange kW svarer 40A ved 230V til?

Det svarer til 9.2 kW med en anbefalet sikring på 40A.